Vacuum line

[fruitcakesa]

While doing rust repair under and around the battery tray I accidently pulled a small black line [looks like a vac line] out of the bundle of wires that is routed along the pass side of the engine bay and enters the car though a rubber sleeve on the pass side of the firewall next to the battery. I tried sliding it back in to the hole it pulled out of but it is loose.
What is it and should it be a snug fit in the rubber sleeve or does it connect to a fitting inside the car?

[elkman]

Is this for the 240D? There should be numerous threads on vacuum lines you should be able to find something here. My gues would be that it is a climate control line. Have you had a loss of any functions?

[fruitcakesa]

I am just now buttoning the car back up after a bit of rehabbing so I will be able to test the deadheaded and disconnected lines tomorrow

[1983/300CD]

Brake pad sensor wire?

[fruitcakesa]

It is attached to a unit that is also attached to an AC component mounted on the pass side engine bay just below and behind the rt headlight. It runs from thae unit through a rubber grommet and end up in the pass side under the dash. It is attached to nothing once in the vehicle and i could not see anything it might have been attached to.

[nickofoxford]

that line is just a vent line to the cab. all it should do is draw in "cleaner" air into the vacuum system for some valves to last a little longer than if it were to inhale dirty air from the engine compartment. generally black vacuum lines going to the cab are vent lines.

[fruitcakesa]

That makes sense Thanks for the info

[nickofoxford]

you're welcome, i found a couple vac. line diagrams on another thread last week i found the same problem with a vac. line in my 240D